Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Methods of rock-dusting American coal mines
History of rock dusting in United States; investigations by Bureau of Mines; State Law requirements; progress in rock dusting; specifications; types of dust distributors; methods of rock dusting; quality of dust used, rock dust barriers; sampling; typical rock dusted mine; cost of rock dusting; instances where rock dusting is believed to have stopped or limited explosions.
Methods of rock-dusting American coal mines
History of rock dusting in United States; investigations by Bureau of Mines; State Law requirements; progress in rock dusting; specifications; types of dust distributors; methods of rock dusting; quality of dust used, rock dust barriers; sampling; typical rock dusted mine; cost of rock dusting; instances where rock dusting is believed to have stopped or limited explosions.
Methods of rock-dusting American coal mines
U S Bur Mines -- Report Investigation
Forbes, J.J. (Autor:in)
1939
22 pages
Report
Englisch
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| Engineering Index Backfile | 1926
Methods of rock dusting bituminous mines
| Engineering Index Backfile | 1924
Methods of rock dusting bituminous mines
| Engineering Index Backfile | 1925
Methods of rock dusting bituminous mines
| Engineering Index Backfile | 1924
Rock dusting and sampling including wet rock dusting, at bureau of mines experimental coal mine
| Engineering Index Backfile | 1956